./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/rec_counter1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 13:26:40,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:26:40,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:26:40,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:26:40,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:26:40,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:26:40,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:26:40,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:26:40,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:26:40,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:26:40,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:26:40,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:26:40,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:26:40,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:26:40,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:26:40,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:26:40,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:26:40,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:26:40,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:26:40,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:26:40,192 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:26:40,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:26:40,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:26:40,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:26:40,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:26:40,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:26:40,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:26:40,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:26:40,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:26:40,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:26:40,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:26:40,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:26:40,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:26:40,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:26:40,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:26:40,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:26:40,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:26:40,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:26:40,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:26:40,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:26:40,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:26:40,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:26:40,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-23 13:26:40,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:26:40,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:26:40,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:26:40,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:26:40,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:26:40,237 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:26:40,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:26:40,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:26:40,237 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:26:40,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:26:40,238 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:26:40,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:26:40,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:26:40,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 13:26:40,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:26:40,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 13:26:40,239 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-23 13:26:40,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 13:26:40,239 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:26:40,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 13:26:40,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:26:40,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:26:40,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:26:40,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:26:40,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:26:40,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:26:40,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 13:26:40,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:26:40,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:26:40,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 13:26:40,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b [2022-07-23 13:26:40,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:26:40,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:26:40,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:26:40,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:26:40,408 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:26:40,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter1.c [2022-07-23 13:26:40,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7cc04ed4/c7d61eb9a4de4d169f0150c72b9da7e1/FLAG65e6b487c [2022-07-23 13:26:40,758 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:26:40,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter1.c [2022-07-23 13:26:40,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7cc04ed4/c7d61eb9a4de4d169f0150c72b9da7e1/FLAG65e6b487c [2022-07-23 13:26:41,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7cc04ed4/c7d61eb9a4de4d169f0150c72b9da7e1 [2022-07-23 13:26:41,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:26:41,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:26:41,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:26:41,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:26:41,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:26:41,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:26:41" (1/1) ... [2022-07-23 13:26:41,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b37e177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:26:41, skipping insertion in model container [2022-07-23 13:26:41,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:26:41" (1/1) ... [2022-07-23 13:26:41,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:26:41,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:26:41,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:26:41,364 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:26:41,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:26:41,395 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:26:41,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:26:41 WrapperNode [2022-07-23 13:26:41,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:26:41,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:26:41,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:26:41,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:26:41,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:26:41" (1/1) ... [2022-07-23 13:26:41,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:26:41" (1/1) ... [2022-07-23 13:26:41,417 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12 [2022-07-23 13:26:41,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:26:41,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:26:41,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:26:41,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:26:41,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:26:41" (1/1) ... [2022-07-23 13:26:41,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:26:41" (1/1) ... [2022-07-23 13:26:41,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:26:41" (1/1) ... [2022-07-23 13:26:41,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:26:41" (1/1) ... [2022-07-23 13:26:41,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:26:41" (1/1) ... [2022-07-23 13:26:41,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:26:41" (1/1) ... [2022-07-23 13:26:41,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:26:41" (1/1) ... [2022-07-23 13:26:41,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:26:41,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:26:41,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:26:41,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:26:41,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:26:41" (1/1) ... [2022-07-23 13:26:41,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:26:41,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:26:41,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-23 13:26:41,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-23 13:26:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2022-07-23 13:26:41,525 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2022-07-23 13:26:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:26:41,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:26:41,561 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:26:41,562 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:26:41,709 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:26:41,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:26:41,714 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 13:26:41,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:26:41 BoogieIcfgContainer [2022-07-23 13:26:41,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:26:41,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:26:41,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:26:41,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:26:41,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:26:41" (1/3) ... [2022-07-23 13:26:41,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d18d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:26:41, skipping insertion in model container [2022-07-23 13:26:41,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:26:41" (2/3) ... [2022-07-23 13:26:41,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d18d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:26:41, skipping insertion in model container [2022-07-23 13:26:41,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:26:41" (3/3) ... [2022-07-23 13:26:41,728 INFO L111 eAbstractionObserver]: Analyzing ICFG rec_counter1.c [2022-07-23 13:26:41,737 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:26:41,737 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-23 13:26:41,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:26:41,781 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6550599d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@522d7dbc [2022-07-23 13:26:41,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-23 13:26:41,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 13:26:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 13:26:41,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:41,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:41,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:41,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:41,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1088965814, now seen corresponding path program 1 times [2022-07-23 13:26:41,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:41,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502889705] [2022-07-23 13:26:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:41,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:26:41,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:41,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502889705] [2022-07-23 13:26:41,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502889705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:26:41,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:26:41,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:26:41,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880406073] [2022-07-23 13:26:41,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:26:41,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:26:41,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:41,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:26:41,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:26:41,940 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:26:41,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:41,989 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-07-23 13:26:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:26:41,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-23 13:26:41,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:41,996 INFO L225 Difference]: With dead ends: 43 [2022-07-23 13:26:41,996 INFO L226 Difference]: Without dead ends: 22 [2022-07-23 13:26:41,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:26:42,001 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 38 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:42,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 42 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:26:42,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-23 13:26:42,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-23 13:26:42,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:26:42,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-07-23 13:26:42,026 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2022-07-23 13:26:42,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:42,027 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-07-23 13:26:42,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:26:42,027 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-07-23 13:26:42,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 13:26:42,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:42,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:42,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 13:26:42,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:42,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash -601798096, now seen corresponding path program 1 times [2022-07-23 13:26:42,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:42,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621241512] [2022-07-23 13:26:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:42,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:26:42,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:42,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621241512] [2022-07-23 13:26:42,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621241512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:26:42,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:26:42,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:26:42,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485866564] [2022-07-23 13:26:42,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:26:42,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:26:42,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:42,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:26:42,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:26:42,061 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:26:42,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:42,097 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-07-23 13:26:42,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:26:42,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-23 13:26:42,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:42,103 INFO L225 Difference]: With dead ends: 42 [2022-07-23 13:26:42,103 INFO L226 Difference]: Without dead ends: 37 [2022-07-23 13:26:42,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:26:42,105 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:42,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 77 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:26:42,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-23 13:26:42,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-07-23 13:26:42,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 13:26:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-07-23 13:26:42,119 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2022-07-23 13:26:42,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:42,119 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-07-23 13:26:42,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:26:42,120 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-07-23 13:26:42,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-23 13:26:42,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:42,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:42,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 13:26:42,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:42,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash 758423009, now seen corresponding path program 1 times [2022-07-23 13:26:42,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:42,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534884717] [2022-07-23 13:26:42,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:42,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:26:42,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:42,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534884717] [2022-07-23 13:26:42,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534884717] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:26:42,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656339824] [2022-07-23 13:26:42,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:42,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:42,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:26:42,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:26:42,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 13:26:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:42,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 13:26:42,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:26:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:26:42,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:26:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:26:42,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656339824] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:26:42,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:26:42,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-07-23 13:26:42,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447711771] [2022-07-23 13:26:42,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:26:42,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 13:26:42,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:42,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 13:26:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-23 13:26:42,341 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:26:42,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:42,436 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-07-23 13:26:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 13:26:42,443 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-23 13:26:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:42,445 INFO L225 Difference]: With dead ends: 39 [2022-07-23 13:26:42,445 INFO L226 Difference]: Without dead ends: 38 [2022-07-23 13:26:42,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-07-23 13:26:42,446 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 98 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:42,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 69 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:26:42,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-23 13:26:42,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-07-23 13:26:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 13:26:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-07-23 13:26:42,498 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 13 [2022-07-23 13:26:42,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:42,498 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-07-23 13:26:42,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:26:42,499 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-07-23 13:26:42,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-23 13:26:42,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:42,499 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:42,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-23 13:26:42,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:42,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:42,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:42,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452250, now seen corresponding path program 1 times [2022-07-23 13:26:42,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:42,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933241727] [2022-07-23 13:26:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:42,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:42,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:26:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 13:26:42,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:42,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933241727] [2022-07-23 13:26:42,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933241727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:26:42,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:26:42,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:26:42,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926896165] [2022-07-23 13:26:42,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:26:42,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:26:42,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:42,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:26:42,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:26:42,789 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:26:42,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:42,842 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-07-23 13:26:42,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:26:42,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-23 13:26:42,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:42,843 INFO L225 Difference]: With dead ends: 48 [2022-07-23 13:26:42,844 INFO L226 Difference]: Without dead ends: 47 [2022-07-23 13:26:42,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:26:42,845 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:42,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:26:42,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-23 13:26:42,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2022-07-23 13:26:42,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 31 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 13:26:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-07-23 13:26:42,866 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 16 [2022-07-23 13:26:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:42,866 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-07-23 13:26:42,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:26:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-07-23 13:26:42,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-23 13:26:42,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:42,867 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:42,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 13:26:42,868 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:42,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:42,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452195, now seen corresponding path program 1 times [2022-07-23 13:26:42,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:42,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463421502] [2022-07-23 13:26:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:42,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:42,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:26:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 13:26:42,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:42,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463421502] [2022-07-23 13:26:42,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463421502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:26:42,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:26:42,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 13:26:42,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437067044] [2022-07-23 13:26:42,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:26:42,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:26:42,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:42,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:26:42,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:26:42,964 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:26:42,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:42,990 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2022-07-23 13:26:42,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:26:42,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-23 13:26:42,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:42,992 INFO L225 Difference]: With dead ends: 64 [2022-07-23 13:26:42,992 INFO L226 Difference]: Without dead ends: 42 [2022-07-23 13:26:42,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:26:42,993 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:42,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:26:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-23 13:26:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-07-23 13:26:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 35 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 13:26:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2022-07-23 13:26:42,998 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 16 [2022-07-23 13:26:42,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:42,999 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2022-07-23 13:26:42,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:26:42,999 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2022-07-23 13:26:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-23 13:26:43,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:43,000 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:43,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 13:26:43,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:43,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 468587862, now seen corresponding path program 1 times [2022-07-23 13:26:43,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:43,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156484582] [2022-07-23 13:26:43,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:43,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:43,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:26:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 13:26:43,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:43,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156484582] [2022-07-23 13:26:43,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156484582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:26:43,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:26:43,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:26:43,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74330459] [2022-07-23 13:26:43,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:26:43,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:26:43,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:43,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:26:43,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:26:43,023 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:26:43,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:43,030 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-07-23 13:26:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:26:43,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-23 13:26:43,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:43,031 INFO L225 Difference]: With dead ends: 42 [2022-07-23 13:26:43,031 INFO L226 Difference]: Without dead ends: 37 [2022-07-23 13:26:43,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:26:43,032 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:43,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:26:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-23 13:26:43,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-07-23 13:26:43,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 13:26:43,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-07-23 13:26:43,037 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 17 [2022-07-23 13:26:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:43,037 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-07-23 13:26:43,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:26:43,037 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-07-23 13:26:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 13:26:43,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:43,038 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:43,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-23 13:26:43,038 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:43,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:43,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1288772758, now seen corresponding path program 1 times [2022-07-23 13:26:43,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:43,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981219394] [2022-07-23 13:26:43,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:43,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:43,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:26:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-23 13:26:43,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:43,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981219394] [2022-07-23 13:26:43,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981219394] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:26:43,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387816331] [2022-07-23 13:26:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:43,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:43,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:26:43,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:26:43,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 13:26:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:43,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:26:43,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:26:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-23 13:26:43,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:26:43,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387816331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:26:43,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:26:43,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2022-07-23 13:26:43,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230878824] [2022-07-23 13:26:43,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:26:43,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 13:26:43,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:43,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 13:26:43,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-23 13:26:43,215 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:26:43,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:43,267 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-07-23 13:26:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 13:26:43,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2022-07-23 13:26:43,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:43,268 INFO L225 Difference]: With dead ends: 37 [2022-07-23 13:26:43,269 INFO L226 Difference]: Without dead ends: 36 [2022-07-23 13:26:43,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:26:43,270 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:43,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 83 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:26:43,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-23 13:26:43,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-23 13:26:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 13:26:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-07-23 13:26:43,274 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 27 [2022-07-23 13:26:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:43,274 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-07-23 13:26:43,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:26:43,275 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-07-23 13:26:43,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-23 13:26:43,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:43,275 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:43,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-23 13:26:43,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-07-23 13:26:43,499 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:43,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1297249887, now seen corresponding path program 1 times [2022-07-23 13:26:43,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:43,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566965440] [2022-07-23 13:26:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:43,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:43,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:26:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-23 13:26:43,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:43,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566965440] [2022-07-23 13:26:43,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566965440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:26:43,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:26:43,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:26:43,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520807315] [2022-07-23 13:26:43,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:26:43,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:26:43,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:43,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:26:43,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:26:43,558 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:26:43,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:43,563 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-07-23 13:26:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:26:43,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-07-23 13:26:43,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:43,564 INFO L225 Difference]: With dead ends: 36 [2022-07-23 13:26:43,564 INFO L226 Difference]: Without dead ends: 35 [2022-07-23 13:26:43,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:26:43,565 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:43,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:26:43,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-23 13:26:43,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-23 13:26:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 13:26:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-07-23 13:26:43,569 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 28 [2022-07-23 13:26:43,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:43,569 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-07-23 13:26:43,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:26:43,569 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-07-23 13:26:43,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-23 13:26:43,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:43,570 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:43,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-23 13:26:43,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:43,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:43,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1116627082, now seen corresponding path program 1 times [2022-07-23 13:26:43,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:43,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980943556] [2022-07-23 13:26:43,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:43,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:43,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:26:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:43,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:43,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-23 13:26:43,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:43,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980943556] [2022-07-23 13:26:43,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980943556] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:26:43,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857474109] [2022-07-23 13:26:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:43,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:43,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:26:43,615 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:26:43,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 13:26:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:43,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:26:43,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:26:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 13:26:43,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:26:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 13:26:43,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857474109] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:26:43,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:26:43,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2022-07-23 13:26:43,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245922740] [2022-07-23 13:26:43,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:26:43,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-23 13:26:43,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:43,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-23 13:26:43,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:26:43,807 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 17 states, 16 states have (on average 2.75) internal successors, (44), 13 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 13:26:44,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:44,013 INFO L93 Difference]: Finished difference Result 122 states and 151 transitions. [2022-07-23 13:26:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-23 13:26:44,014 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 13 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 30 [2022-07-23 13:26:44,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:44,015 INFO L225 Difference]: With dead ends: 122 [2022-07-23 13:26:44,015 INFO L226 Difference]: Without dead ends: 89 [2022-07-23 13:26:44,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2022-07-23 13:26:44,016 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 86 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:44,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 129 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:26:44,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-07-23 13:26:44,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2022-07-23 13:26:44,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-23 13:26:44,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2022-07-23 13:26:44,040 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 30 [2022-07-23 13:26:44,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:44,041 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2022-07-23 13:26:44,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 13 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 13:26:44,041 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2022-07-23 13:26:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-23 13:26:44,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:44,043 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:44,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-23 13:26:44,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:44,250 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:44,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:44,251 INFO L85 PathProgramCache]: Analyzing trace with hash -244897613, now seen corresponding path program 2 times [2022-07-23 13:26:44,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:44,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546437952] [2022-07-23 13:26:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:44,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:44,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 13:26:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:44,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:44,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:44,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 100 proven. 42 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-23 13:26:44,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:44,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546437952] [2022-07-23 13:26:44,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546437952] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:26:44,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683789725] [2022-07-23 13:26:44,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:26:44,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:44,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:26:44,556 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:26:44,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 13:26:44,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:26:44,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:26:44,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-23 13:26:44,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:26:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 107 proven. 35 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-23 13:26:44,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:26:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 107 proven. 35 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-23 13:26:45,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683789725] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:26:45,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:26:45,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 23 [2022-07-23 13:26:45,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421884199] [2022-07-23 13:26:45,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:26:45,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-23 13:26:45,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:45,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-23 13:26:45,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-07-23 13:26:45,178 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-23 13:26:45,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:45,355 INFO L93 Difference]: Finished difference Result 139 states and 169 transitions. [2022-07-23 13:26:45,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-23 13:26:45,355 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 91 [2022-07-23 13:26:45,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:45,356 INFO L225 Difference]: With dead ends: 139 [2022-07-23 13:26:45,356 INFO L226 Difference]: Without dead ends: 83 [2022-07-23 13:26:45,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2022-07-23 13:26:45,357 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:45,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 268 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:26:45,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-23 13:26:45,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-23 13:26:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 74 states have internal predecessors, (81), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-23 13:26:45,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2022-07-23 13:26:45,368 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 91 [2022-07-23 13:26:45,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:45,369 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2022-07-23 13:26:45,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-23 13:26:45,369 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2022-07-23 13:26:45,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-23 13:26:45,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:45,374 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:45,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-23 13:26:45,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:45,591 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:45,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2079362653, now seen corresponding path program 3 times [2022-07-23 13:26:45,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:45,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480209908] [2022-07-23 13:26:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:45,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:45,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:26:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:45,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:45,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:45,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:45,797 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 179 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-23 13:26:45,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:45,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480209908] [2022-07-23 13:26:45,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480209908] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:26:45,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061726895] [2022-07-23 13:26:45,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:26:45,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:45,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:26:45,799 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:26:45,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 13:26:45,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-23 13:26:45,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:26:45,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 13:26:45,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:26:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-23 13:26:45,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:26:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-23 13:26:46,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061726895] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:26:46,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:26:46,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 31 [2022-07-23 13:26:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547556582] [2022-07-23 13:26:46,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:26:46,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-23 13:26:46,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:46,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-23 13:26:46,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-07-23 13:26:46,179 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-23 13:26:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:46,588 INFO L93 Difference]: Finished difference Result 148 states and 171 transitions. [2022-07-23 13:26:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-23 13:26:46,589 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 87 [2022-07-23 13:26:46,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:46,590 INFO L225 Difference]: With dead ends: 148 [2022-07-23 13:26:46,590 INFO L226 Difference]: Without dead ends: 130 [2022-07-23 13:26:46,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2022-07-23 13:26:46,592 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 197 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:46,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 161 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:26:46,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-07-23 13:26:46,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 125. [2022-07-23 13:26:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 115 states have internal predecessors, (128), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-23 13:26:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2022-07-23 13:26:46,601 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 87 [2022-07-23 13:26:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:46,602 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2022-07-23 13:26:46,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-23 13:26:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2022-07-23 13:26:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-23 13:26:46,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:46,603 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 9, 8, 8, 8, 8, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:46,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-23 13:26:46,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-23 13:26:46,837 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:46,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1902147306, now seen corresponding path program 4 times [2022-07-23 13:26:46,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:46,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489325470] [2022-07-23 13:26:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:46,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:46,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 13:26:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:46,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:46,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:47,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:47,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 492 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-07-23 13:26:47,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:47,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489325470] [2022-07-23 13:26:47,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489325470] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:26:47,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945602844] [2022-07-23 13:26:47,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:26:47,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:47,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:26:47,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:26:47,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 13:26:47,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:26:47,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:26:47,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-23 13:26:47,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:26:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 485 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-23 13:26:47,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:26:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 485 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-23 13:26:48,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945602844] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:26:48,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:26:48,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 41 [2022-07-23 13:26:48,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017172315] [2022-07-23 13:26:48,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:26:48,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-23 13:26:48,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:48,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-23 13:26:48,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1400, Unknown=0, NotChecked=0, Total=1722 [2022-07-23 13:26:48,213 INFO L87 Difference]: Start difference. First operand 125 states and 138 transitions. Second operand has 42 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 29 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-23 13:26:48,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:48,461 INFO L93 Difference]: Finished difference Result 638 states and 722 transitions. [2022-07-23 13:26:48,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-23 13:26:48,461 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 29 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 132 [2022-07-23 13:26:48,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:48,464 INFO L225 Difference]: With dead ends: 638 [2022-07-23 13:26:48,464 INFO L226 Difference]: Without dead ends: 469 [2022-07-23 13:26:48,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=625, Invalid=2681, Unknown=0, NotChecked=0, Total=3306 [2022-07-23 13:26:48,467 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 107 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:48,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 250 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:26:48,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-07-23 13:26:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 230. [2022-07-23 13:26:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 213 states have (on average 1.0938967136150235) internal successors, (233), 213 states have internal predecessors, (233), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-23 13:26:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 250 transitions. [2022-07-23 13:26:48,485 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 250 transitions. Word has length 132 [2022-07-23 13:26:48,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:48,485 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 250 transitions. [2022-07-23 13:26:48,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 29 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-23 13:26:48,486 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 250 transitions. [2022-07-23 13:26:48,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-23 13:26:48,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:48,488 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:48,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-23 13:26:48,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:48,715 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:48,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:48,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1072440394, now seen corresponding path program 5 times [2022-07-23 13:26:48,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:48,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25543131] [2022-07-23 13:26:48,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:48,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:48,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:26:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:48,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:48,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:49,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:49,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:49,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:49,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:49,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:49,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:49,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1751 proven. 51 refuted. 0 times theorem prover too weak. 1673 trivial. 0 not checked. [2022-07-23 13:26:49,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:49,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25543131] [2022-07-23 13:26:49,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25543131] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:26:49,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109324242] [2022-07-23 13:26:49,156 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:26:49,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:49,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:26:49,180 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:26:49,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-23 13:26:49,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-07-23 13:26:49,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:26:49,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-23 13:26:49,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:26:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1319 proven. 88 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2022-07-23 13:26:49,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:26:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1337 proven. 70 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2022-07-23 13:26:50,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109324242] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:26:50,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:26:50,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 27 [2022-07-23 13:26:50,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76246875] [2022-07-23 13:26:50,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:26:50,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-23 13:26:50,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:50,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-23 13:26:50,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-07-23 13:26:50,304 INFO L87 Difference]: Start difference. First operand 230 states and 250 transitions. Second operand has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:26:50,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:50,689 INFO L93 Difference]: Finished difference Result 492 states and 542 transitions. [2022-07-23 13:26:50,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-23 13:26:50,690 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 262 [2022-07-23 13:26:50,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:50,691 INFO L225 Difference]: With dead ends: 492 [2022-07-23 13:26:50,691 INFO L226 Difference]: Without dead ends: 301 [2022-07-23 13:26:50,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 540 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=365, Invalid=1615, Unknown=0, NotChecked=0, Total=1980 [2022-07-23 13:26:50,693 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 52 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:50,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 295 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:26:50,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-07-23 13:26:50,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 288. [2022-07-23 13:26:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 268 states have (on average 1.078358208955224) internal successors, (289), 268 states have internal predecessors, (289), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-23 13:26:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 309 transitions. [2022-07-23 13:26:50,706 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 309 transitions. Word has length 262 [2022-07-23 13:26:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:50,707 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 309 transitions. [2022-07-23 13:26:50,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:26:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 309 transitions. [2022-07-23 13:26:50,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-07-23 13:26:50,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:50,710 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:50,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-23 13:26:50,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:50,927 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:50,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:50,927 INFO L85 PathProgramCache]: Analyzing trace with hash -60644733, now seen corresponding path program 6 times [2022-07-23 13:26:50,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:50,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825866673] [2022-07-23 13:26:50,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:50,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 13:26:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4566 backedges. 1945 proven. 90 refuted. 0 times theorem prover too weak. 2531 trivial. 0 not checked. [2022-07-23 13:26:51,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:51,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825866673] [2022-07-23 13:26:51,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825866673] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:26:51,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436768348] [2022-07-23 13:26:51,380 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-23 13:26:51,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:51,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:26:51,400 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:26:51,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-23 13:26:51,494 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-07-23 13:26:51,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:26:51,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-23 13:26:51,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:26:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4566 backedges. 1402 proven. 119 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2022-07-23 13:26:51,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:26:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4566 backedges. 1402 proven. 119 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2022-07-23 13:26:52,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436768348] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:26:52,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:26:52,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 14] total 47 [2022-07-23 13:26:52,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306966846] [2022-07-23 13:26:52,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:26:52,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-23 13:26:52,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:52,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-23 13:26:52,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1887, Unknown=0, NotChecked=0, Total=2162 [2022-07-23 13:26:52,291 INFO L87 Difference]: Start difference. First operand 288 states and 309 transitions. Second operand has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 44 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 13:26:54,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:54,062 INFO L93 Difference]: Finished difference Result 1217 states and 1388 transitions. [2022-07-23 13:26:54,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-07-23 13:26:54,063 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 44 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 293 [2022-07-23 13:26:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:54,066 INFO L225 Difference]: With dead ends: 1217 [2022-07-23 13:26:54,066 INFO L226 Difference]: Without dead ends: 971 [2022-07-23 13:26:54,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 588 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3577 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2102, Invalid=12178, Unknown=0, NotChecked=0, Total=14280 [2022-07-23 13:26:54,070 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 531 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:54,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 374 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 13:26:54,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-07-23 13:26:54,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 380. [2022-07-23 13:26:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 357 states have (on average 1.0812324929971988) internal successors, (386), 357 states have internal predecessors, (386), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 20 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-23 13:26:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 409 transitions. [2022-07-23 13:26:54,094 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 409 transitions. Word has length 293 [2022-07-23 13:26:54,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:54,095 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 409 transitions. [2022-07-23 13:26:54,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 44 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 13:26:54,095 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 409 transitions. [2022-07-23 13:26:54,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-07-23 13:26:54,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:54,098 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:54,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-23 13:26:54,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-23 13:26:54,316 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:54,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:54,316 INFO L85 PathProgramCache]: Analyzing trace with hash 286972742, now seen corresponding path program 7 times [2022-07-23 13:26:54,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:54,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437055217] [2022-07-23 13:26:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:54,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:26:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3710 proven. 138 refuted. 0 times theorem prover too weak. 2737 trivial. 0 not checked. [2022-07-23 13:26:54,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:26:54,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437055217] [2022-07-23 13:26:54,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437055217] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:26:54,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713990693] [2022-07-23 13:26:54,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-23 13:26:54,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:26:54,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:26:54,921 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:26:54,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-23 13:26:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:55,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-23 13:26:55,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:26:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3350 proven. 311 refuted. 0 times theorem prover too weak. 2924 trivial. 0 not checked. [2022-07-23 13:26:55,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:26:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3350 proven. 311 refuted. 0 times theorem prover too weak. 2924 trivial. 0 not checked. [2022-07-23 13:26:58,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713990693] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:26:58,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:26:58,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2022-07-23 13:26:58,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903603667] [2022-07-23 13:26:58,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:26:58,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-23 13:26:58,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:26:58,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-23 13:26:58,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2022-07-23 13:26:58,199 INFO L87 Difference]: Start difference. First operand 380 states and 409 transitions. Second operand has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-23 13:26:59,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:26:59,341 INFO L93 Difference]: Finished difference Result 787 states and 849 transitions. [2022-07-23 13:26:59,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-23 13:26:59,341 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 322 [2022-07-23 13:26:59,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:26:59,344 INFO L225 Difference]: With dead ends: 787 [2022-07-23 13:26:59,344 INFO L226 Difference]: Without dead ends: 521 [2022-07-23 13:26:59,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 653 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2437 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1171, Invalid=7759, Unknown=0, NotChecked=0, Total=8930 [2022-07-23 13:26:59,349 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 75 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 13:26:59,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 397 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 13:26:59,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-07-23 13:26:59,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 469. [2022-07-23 13:26:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 442 states have (on average 1.0701357466063348) internal successors, (473), 442 states have internal predecessors, (473), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 24 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-23 13:26:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 500 transitions. [2022-07-23 13:26:59,413 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 500 transitions. Word has length 322 [2022-07-23 13:26:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:26:59,414 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 500 transitions. [2022-07-23 13:26:59,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-23 13:26:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 500 transitions. [2022-07-23 13:26:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-07-23 13:26:59,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:26:59,417 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-23 13:26:59,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-23 13:26:59,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-23 13:26:59,648 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:26:59,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:26:59,648 INFO L85 PathProgramCache]: Analyzing trace with hash 113070627, now seen corresponding path program 8 times [2022-07-23 13:26:59,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:26:59,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300680987] [2022-07-23 13:26:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:26:59,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:26:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:26:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:26:59,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:26:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:00,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:00,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:00,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:00,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:00,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:00,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:00,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:00,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:00,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:00,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4312 proven. 195 refuted. 0 times theorem prover too weak. 3043 trivial. 0 not checked. [2022-07-23 13:27:00,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:00,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300680987] [2022-07-23 13:27:00,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300680987] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:00,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196012] [2022-07-23 13:27:00,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:27:00,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:00,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:00,432 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:00,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-23 13:27:00,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:27:00,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:00,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-23 13:27:00,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4374 proven. 499 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2022-07-23 13:27:01,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4374 proven. 499 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2022-07-23 13:27:05,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196012] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:05,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:05,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38, 38] total 51 [2022-07-23 13:27:05,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143142434] [2022-07-23 13:27:05,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:05,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-23 13:27:05,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:05,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-23 13:27:05,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2022-07-23 13:27:05,323 INFO L87 Difference]: Start difference. First operand 469 states and 500 transitions. Second operand has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-23 13:27:07,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:07,040 INFO L93 Difference]: Finished difference Result 958 states and 1021 transitions. [2022-07-23 13:27:07,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-07-23 13:27:07,041 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 337 [2022-07-23 13:27:07,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:07,044 INFO L225 Difference]: With dead ends: 958 [2022-07-23 13:27:07,044 INFO L226 Difference]: Without dead ends: 668 [2022-07-23 13:27:07,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 680 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3934 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1769, Invalid=12037, Unknown=0, NotChecked=0, Total=13806 [2022-07-23 13:27:07,048 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 85 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:07,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 420 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 13:27:07,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-07-23 13:27:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 588. [2022-07-23 13:27:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 556 states have (on average 1.0611510791366907) internal successors, (590), 556 states have internal predecessors, (590), 3 states have call successors, (3), 2 states have call predecessors, (3), 28 states have return successors, (29), 29 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-23 13:27:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 622 transitions. [2022-07-23 13:27:07,087 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 622 transitions. Word has length 337 [2022-07-23 13:27:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:07,088 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 622 transitions. [2022-07-23 13:27:07,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-23 13:27:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 622 transitions. [2022-07-23 13:27:07,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-07-23 13:27:07,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:07,092 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:07,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:07,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-23 13:27:07,312 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:07,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:07,313 INFO L85 PathProgramCache]: Analyzing trace with hash -382247901, now seen corresponding path program 9 times [2022-07-23 13:27:07,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:07,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994742445] [2022-07-23 13:27:07,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:07,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:07,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 13:27:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:08,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:08,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:08,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 4853 proven. 261 refuted. 0 times theorem prover too weak. 3401 trivial. 0 not checked. [2022-07-23 13:27:08,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:08,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994742445] [2022-07-23 13:27:08,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994742445] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:08,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942404581] [2022-07-23 13:27:08,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:27:08,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:08,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:08,056 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:08,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-23 13:27:08,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-07-23 13:27:08,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:08,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-23 13:27:08,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 1756 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2022-07-23 13:27:08,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 1756 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2022-07-23 13:27:09,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942404581] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:09,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:09,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21, 21] total 73 [2022-07-23 13:27:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110519808] [2022-07-23 13:27:09,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:09,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-07-23 13:27:09,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:09,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-07-23 13:27:09,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=4528, Unknown=0, NotChecked=0, Total=5256 [2022-07-23 13:27:09,626 INFO L87 Difference]: Start difference. First operand 588 states and 622 transitions. Second operand has 73 states, 73 states have (on average 1.8356164383561644) internal successors, (134), 72 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 13:27:11,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:11,368 INFO L93 Difference]: Finished difference Result 1739 states and 1954 transitions. [2022-07-23 13:27:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-07-23 13:27:11,368 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.8356164383561644) internal successors, (134), 72 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 359 [2022-07-23 13:27:11,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:11,372 INFO L225 Difference]: With dead ends: 1739 [2022-07-23 13:27:11,373 INFO L226 Difference]: Without dead ends: 1423 [2022-07-23 13:27:11,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4627 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3164, Invalid=16296, Unknown=0, NotChecked=0, Total=19460 [2022-07-23 13:27:11,391 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 477 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:11,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 741 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 13:27:11,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-07-23 13:27:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 803. [2022-07-23 13:27:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 765 states have (on average 1.0627450980392157) internal successors, (813), 765 states have internal predecessors, (813), 3 states have call successors, (3), 2 states have call predecessors, (3), 34 states have return successors, (35), 35 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-23 13:27:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 851 transitions. [2022-07-23 13:27:11,483 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 851 transitions. Word has length 359 [2022-07-23 13:27:11,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:11,483 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 851 transitions. [2022-07-23 13:27:11,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.8356164383561644) internal successors, (134), 72 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 13:27:11,484 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 851 transitions. [2022-07-23 13:27:11,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-07-23 13:27:11,489 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:11,489 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:11,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-23 13:27:11,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-23 13:27:11,710 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:11,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1921176138, now seen corresponding path program 10 times [2022-07-23 13:27:11,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:11,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449644996] [2022-07-23 13:27:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:11,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:11,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:27:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:11,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:12,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:12,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:12,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:12,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:12,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:12,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:12,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:12,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:12,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 6985 proven. 336 refuted. 0 times theorem prover too weak. 4071 trivial. 0 not checked. [2022-07-23 13:27:12,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:12,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449644996] [2022-07-23 13:27:12,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449644996] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:12,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796174666] [2022-07-23 13:27:12,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:27:12,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:12,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:12,496 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:12,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-23 13:27:12,814 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:27:12,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:12,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-23 13:27:12,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 7596 proven. 1073 refuted. 0 times theorem prover too weak. 2723 trivial. 0 not checked. [2022-07-23 13:27:13,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 7596 proven. 1073 refuted. 0 times theorem prover too weak. 2723 trivial. 0 not checked. [2022-07-23 13:27:19,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796174666] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:19,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:19,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 48, 48] total 65 [2022-07-23 13:27:19,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281365227] [2022-07-23 13:27:19,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:19,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-07-23 13:27:19,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:19,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-07-23 13:27:19,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3770, Unknown=0, NotChecked=0, Total=4160 [2022-07-23 13:27:19,054 INFO L87 Difference]: Start difference. First operand 803 states and 851 transitions. Second operand has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-23 13:27:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:22,037 INFO L93 Difference]: Finished difference Result 1552 states and 1640 transitions. [2022-07-23 13:27:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-07-23 13:27:22,038 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 388 [2022-07-23 13:27:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:22,041 INFO L225 Difference]: With dead ends: 1552 [2022-07-23 13:27:22,041 INFO L226 Difference]: Without dead ends: 1154 [2022-07-23 13:27:22,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8655 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3583, Invalid=25147, Unknown=0, NotChecked=0, Total=28730 [2022-07-23 13:27:22,046 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 107 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 3338 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 3358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:22,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 534 Invalid, 3358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 3338 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-23 13:27:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-07-23 13:27:22,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1000. [2022-07-23 13:27:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 955 states have (on average 1.0554973821989528) internal successors, (1008), 955 states have internal predecessors, (1008), 3 states have call successors, (3), 2 states have call predecessors, (3), 41 states have return successors, (42), 42 states have call predecessors, (42), 2 states have call successors, (42) [2022-07-23 13:27:22,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1053 transitions. [2022-07-23 13:27:22,156 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1053 transitions. Word has length 388 [2022-07-23 13:27:22,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:22,157 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1053 transitions. [2022-07-23 13:27:22,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-23 13:27:22,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1053 transitions. [2022-07-23 13:27:22,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-07-23 13:27:22,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:22,162 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:22,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:22,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-23 13:27:22,381 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:22,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:22,381 INFO L85 PathProgramCache]: Analyzing trace with hash 373178470, now seen corresponding path program 11 times [2022-07-23 13:27:22,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:22,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757470818] [2022-07-23 13:27:22,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:22,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:22,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 13:27:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:22,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 6812 proven. 420 refuted. 0 times theorem prover too weak. 4808 trivial. 0 not checked. [2022-07-23 13:27:23,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:23,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757470818] [2022-07-23 13:27:23,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757470818] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:23,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169153276] [2022-07-23 13:27:23,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:27:23,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:23,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:23,236 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:23,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-23 13:27:23,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2022-07-23 13:27:23,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:23,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-23 13:27:23,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 8259 proven. 1615 refuted. 0 times theorem prover too weak. 2166 trivial. 0 not checked. [2022-07-23 13:27:24,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 8445 proven. 1429 refuted. 0 times theorem prover too weak. 2166 trivial. 0 not checked. [2022-07-23 13:27:28,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169153276] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:28,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:28,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 48, 48] total 69 [2022-07-23 13:27:28,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174512222] [2022-07-23 13:27:28,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:28,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-07-23 13:27:28,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:28,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-07-23 13:27:28,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=4229, Unknown=0, NotChecked=0, Total=4692 [2022-07-23 13:27:28,290 INFO L87 Difference]: Start difference. First operand 1000 states and 1053 transitions. Second operand has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-23 13:27:30,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:30,933 INFO L93 Difference]: Finished difference Result 1870 states and 1963 transitions. [2022-07-23 13:27:30,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-07-23 13:27:30,934 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 404 [2022-07-23 13:27:30,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:30,945 INFO L225 Difference]: With dead ends: 1870 [2022-07-23 13:27:30,945 INFO L226 Difference]: Without dead ends: 1448 [2022-07-23 13:27:30,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 805 SyntacticMatches, 3 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10402 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4838, Invalid=30694, Unknown=0, NotChecked=0, Total=35532 [2022-07-23 13:27:30,951 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 130 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 3814 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 3839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:30,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 543 Invalid, 3839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-23 13:27:30,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2022-07-23 13:27:31,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1248. [2022-07-23 13:27:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1195 states have (on average 1.0502092050209204) internal successors, (1255), 1195 states have internal predecessors, (1255), 3 states have call successors, (3), 2 states have call predecessors, (3), 49 states have return successors, (50), 50 states have call predecessors, (50), 2 states have call successors, (50) [2022-07-23 13:27:31,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1308 transitions. [2022-07-23 13:27:31,097 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1308 transitions. Word has length 404 [2022-07-23 13:27:31,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:31,098 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 1308 transitions. [2022-07-23 13:27:31,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-23 13:27:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1308 transitions. [2022-07-23 13:27:31,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-07-23 13:27:31,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:31,102 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:31,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:31,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:31,321 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:31,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:31,322 INFO L85 PathProgramCache]: Analyzing trace with hash 144455286, now seen corresponding path program 12 times [2022-07-23 13:27:31,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:31,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192742490] [2022-07-23 13:27:31,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:31,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 13:27:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:31,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:31,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:32,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:32,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:32,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:32,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:32,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:32,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:27:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:32,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 9009 proven. 1914 refuted. 0 times theorem prover too weak. 1638 trivial. 0 not checked. [2022-07-23 13:27:32,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:32,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192742490] [2022-07-23 13:27:32,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192742490] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:32,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108618027] [2022-07-23 13:27:32,583 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-23 13:27:32,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:32,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:32,585 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:32,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-23 13:27:33,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-07-23 13:27:33,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:33,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-23 13:27:33,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 580 proven. 10191 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2022-07-23 13:27:34,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:39,946 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 580 proven. 10191 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2022-07-23 13:27:39,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108618027] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:39,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:39,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 37, 37] total 130 [2022-07-23 13:27:39,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567773941] [2022-07-23 13:27:39,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:39,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-07-23 13:27:39,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:39,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-07-23 13:27:39,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1345, Invalid=15425, Unknown=0, NotChecked=0, Total=16770 [2022-07-23 13:27:39,950 INFO L87 Difference]: Start difference. First operand 1248 states and 1308 transitions. Second operand has 130 states, 130 states have (on average 2.476923076923077) internal successors, (322), 98 states have internal predecessors, (322), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2022-07-23 13:28:03,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:28:03,018 INFO L93 Difference]: Finished difference Result 4255 states and 4522 transitions. [2022-07-23 13:28:03,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 683 states. [2022-07-23 13:28:03,027 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.476923076923077) internal successors, (322), 98 states have internal predecessors, (322), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) Word has length 410 [2022-07-23 13:28:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:28:03,041 INFO L225 Difference]: With dead ends: 4255 [2022-07-23 13:28:03,041 INFO L226 Difference]: Without dead ends: 3470 [2022-07-23 13:28:03,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1579 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 804 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259569 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=53363, Invalid=595467, Unknown=0, NotChecked=0, Total=648830 [2022-07-23 13:28:03,113 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1872 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 13:28:03,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 1074 Invalid, 2947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-23 13:28:03,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2022-07-23 13:28:03,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 2784. [2022-07-23 13:28:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2675 states have (on average 1.0429906542056075) internal successors, (2790), 2675 states have internal predecessors, (2790), 3 states have call successors, (3), 2 states have call predecessors, (3), 105 states have return successors, (106), 106 states have call predecessors, (106), 2 states have call successors, (106) [2022-07-23 13:28:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 2899 transitions. [2022-07-23 13:28:03,584 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 2899 transitions. Word has length 410 [2022-07-23 13:28:03,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:28:03,585 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 2899 transitions. [2022-07-23 13:28:03,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.476923076923077) internal successors, (322), 98 states have internal predecessors, (322), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2022-07-23 13:28:03,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 2899 transitions. [2022-07-23 13:28:03,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2022-07-23 13:28:03,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:28:03,595 INFO L195 NwaCegarLoop]: trace histogram [201, 201, 201, 23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1] [2022-07-23 13:28:03,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-23 13:28:03,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:28:03,831 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:28:03,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:28:03,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1472456966, now seen corresponding path program 13 times [2022-07-23 13:28:03,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:28:03,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866092959] [2022-07-23 13:28:03,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:28:03,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:28:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:28:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:04,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:05,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:05,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:05,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:05,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 67286 backedges. 1221 proven. 6 refuted. 0 times theorem prover too weak. 66059 trivial. 0 not checked. [2022-07-23 13:28:06,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:28:06,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866092959] [2022-07-23 13:28:06,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866092959] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:28:06,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063843857] [2022-07-23 13:28:06,822 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-23 13:28:06,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:28:06,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:28:06,823 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:28:06,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-23 13:28:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:07,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 13:28:07,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:28:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 67286 backedges. 1222 proven. 5 refuted. 0 times theorem prover too weak. 66059 trivial. 0 not checked. [2022-07-23 13:28:07,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:28:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 67286 backedges. 1222 proven. 5 refuted. 0 times theorem prover too weak. 66059 trivial. 0 not checked. [2022-07-23 13:28:08,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063843857] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:28:08,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:28:08,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-07-23 13:28:08,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570620402] [2022-07-23 13:28:08,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:28:08,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-23 13:28:08,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:28:08,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-23 13:28:08,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-23 13:28:08,760 INFO L87 Difference]: Start difference. First operand 2784 states and 2899 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:28:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:28:08,996 INFO L93 Difference]: Finished difference Result 4067 states and 4234 transitions. [2022-07-23 13:28:08,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 13:28:08,998 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 850 [2022-07-23 13:28:09,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:28:09,011 INFO L225 Difference]: With dead ends: 4067 [2022-07-23 13:28:09,011 INFO L226 Difference]: Without dead ends: 2035 [2022-07-23 13:28:09,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1775 GetRequests, 1758 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-07-23 13:28:09,016 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:28:09,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 150 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:28:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-07-23 13:28:09,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2035. [2022-07-23 13:28:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1957 states have (on average 1.0424118548799182) internal successors, (2040), 1957 states have internal predecessors, (2040), 3 states have call successors, (3), 2 states have call predecessors, (3), 74 states have return successors, (75), 75 states have call predecessors, (75), 2 states have call successors, (75) [2022-07-23 13:28:09,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2118 transitions. [2022-07-23 13:28:09,227 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2118 transitions. Word has length 850 [2022-07-23 13:28:09,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:28:09,227 INFO L495 AbstractCegarLoop]: Abstraction has 2035 states and 2118 transitions. [2022-07-23 13:28:09,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:28:09,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2118 transitions. [2022-07-23 13:28:09,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2022-07-23 13:28:09,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:28:09,235 INFO L195 NwaCegarLoop]: trace histogram [203, 203, 203, 26, 25, 25, 25, 25, 23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1] [2022-07-23 13:28:09,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-23 13:28:09,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:28:09,450 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:28:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:28:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1478425027, now seen corresponding path program 14 times [2022-07-23 13:28:09,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:28:09,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022598062] [2022-07-23 13:28:09,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:28:09,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:28:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:09,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 13:28:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:10,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:11,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:11,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:11,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:11,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 69224 backedges. 2783 proven. 30 refuted. 0 times theorem prover too weak. 66411 trivial. 0 not checked. [2022-07-23 13:28:12,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:28:12,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022598062] [2022-07-23 13:28:12,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022598062] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:28:12,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365353444] [2022-07-23 13:28:12,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:28:12,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:28:12,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:28:12,654 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:28:12,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-23 13:28:13,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:28:13,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:28:13,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 1981 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-23 13:28:13,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:28:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 69224 backedges. 2787 proven. 26 refuted. 0 times theorem prover too weak. 66411 trivial. 0 not checked. [2022-07-23 13:28:13,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:28:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 69224 backedges. 2787 proven. 26 refuted. 0 times theorem prover too weak. 66411 trivial. 0 not checked. [2022-07-23 13:28:15,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365353444] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:28:15,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:28:15,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 20 [2022-07-23 13:28:15,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181579532] [2022-07-23 13:28:15,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:28:15,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-23 13:28:15,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:28:15,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-23 13:28:15,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-07-23 13:28:15,399 INFO L87 Difference]: Start difference. First operand 2035 states and 2118 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 13:28:15,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:28:15,618 INFO L93 Difference]: Finished difference Result 2620 states and 2726 transitions. [2022-07-23 13:28:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-23 13:28:15,620 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 877 [2022-07-23 13:28:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:28:15,624 INFO L225 Difference]: With dead ends: 2620 [2022-07-23 13:28:15,624 INFO L226 Difference]: Without dead ends: 1337 [2022-07-23 13:28:15,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1841 GetRequests, 1814 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2022-07-23 13:28:15,628 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:28:15,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 123 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:28:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-07-23 13:28:15,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1337. [2022-07-23 13:28:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1288 states have (on average 1.0411490683229814) internal successors, (1341), 1288 states have internal predecessors, (1341), 3 states have call successors, (3), 2 states have call predecessors, (3), 45 states have return successors, (46), 46 states have call predecessors, (46), 2 states have call successors, (46) [2022-07-23 13:28:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1390 transitions. [2022-07-23 13:28:15,771 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1390 transitions. Word has length 877 [2022-07-23 13:28:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:28:15,771 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 1390 transitions. [2022-07-23 13:28:15,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 13:28:15,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1390 transitions. [2022-07-23 13:28:15,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2022-07-23 13:28:15,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:28:15,800 INFO L195 NwaCegarLoop]: trace histogram [206, 206, 206, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-07-23 13:28:15,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-23 13:28:16,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-23 13:28:16,022 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:28:16,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:28:16,023 INFO L85 PathProgramCache]: Analyzing trace with hash 740343631, now seen corresponding path program 15 times [2022-07-23 13:28:16,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:28:16,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016633830] [2022-07-23 13:28:16,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:28:16,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:28:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:16,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:28:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:17,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:17,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:17,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 71350 backedges. 23396 proven. 615 refuted. 0 times theorem prover too weak. 47339 trivial. 0 not checked. [2022-07-23 13:28:18,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:28:18,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016633830] [2022-07-23 13:28:18,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016633830] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:28:18,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077016759] [2022-07-23 13:28:18,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:28:18,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:28:18,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:28:18,561 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:28:18,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-23 13:28:19,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-07-23 13:28:19,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:28:19,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-23 13:28:19,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:28:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 71350 backedges. 17031 proven. 835 refuted. 0 times theorem prover too weak. 53484 trivial. 0 not checked. [2022-07-23 13:28:19,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:28:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 71350 backedges. 17031 proven. 835 refuted. 0 times theorem prover too weak. 53484 trivial. 0 not checked. [2022-07-23 13:28:21,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077016759] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:28:21,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:28:21,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 28, 28] total 103 [2022-07-23 13:28:21,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879141836] [2022-07-23 13:28:21,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:28:21,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-07-23 13:28:21,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:28:21,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-07-23 13:28:21,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=9300, Unknown=0, NotChecked=0, Total=10506 [2022-07-23 13:28:21,581 INFO L87 Difference]: Start difference. First operand 1337 states and 1390 transitions. Second operand has 103 states, 103 states have (on average 1.8058252427184467) internal successors, (186), 100 states have internal predecessors, (186), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 13:28:27,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:28:27,584 INFO L93 Difference]: Finished difference Result 5324 states and 5959 transitions. [2022-07-23 13:28:27,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-07-23 13:28:27,584 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.8058252427184467) internal successors, (186), 100 states have internal predecessors, (186), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 887 [2022-07-23 13:28:27,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:28:27,597 INFO L225 Difference]: With dead ends: 5324 [2022-07-23 13:28:27,598 INFO L226 Difference]: Without dead ends: 4442 [2022-07-23 13:28:27,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2042 GetRequests, 1770 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21070 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=9711, Invalid=65091, Unknown=0, NotChecked=0, Total=74802 [2022-07-23 13:28:27,610 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1256 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 13:28:27,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 895 Invalid, 2888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-23 13:28:27,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2022-07-23 13:28:27,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 1903. [2022-07-23 13:28:27,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1846 states have (on average 1.0444203683640303) internal successors, (1928), 1846 states have internal predecessors, (1928), 3 states have call successors, (3), 2 states have call predecessors, (3), 53 states have return successors, (54), 54 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-23 13:28:27,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 1985 transitions. [2022-07-23 13:28:27,899 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 1985 transitions. Word has length 887 [2022-07-23 13:28:27,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:28:27,899 INFO L495 AbstractCegarLoop]: Abstraction has 1903 states and 1985 transitions. [2022-07-23 13:28:27,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.8058252427184467) internal successors, (186), 100 states have internal predecessors, (186), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 13:28:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 1985 transitions. [2022-07-23 13:28:27,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2022-07-23 13:28:27,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:28:27,910 INFO L195 NwaCegarLoop]: trace histogram [232, 232, 232, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-07-23 13:28:27,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-23 13:28:28,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:28:28,132 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:28:28,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:28:28,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1352258977, now seen corresponding path program 16 times [2022-07-23 13:28:28,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:28:28,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789998905] [2022-07-23 13:28:28,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:28:28,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:28:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:28,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 13:28:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:30,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:30,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:28:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 89266 backedges. 40095 proven. 726 refuted. 0 times theorem prover too weak. 48445 trivial. 0 not checked. [2022-07-23 13:28:31,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:28:31,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789998905] [2022-07-23 13:28:31,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789998905] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:28:31,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310201284] [2022-07-23 13:28:31,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:28:31,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:28:31,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:28:31,695 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:28:31,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-23 13:28:32,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:28:32,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:28:32,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 2207 conjuncts, 68 conjunts are in the unsatisfiable core [2022-07-23 13:28:32,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:28:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 89266 backedges. 51655 proven. 3265 refuted. 0 times theorem prover too weak. 34346 trivial. 0 not checked. [2022-07-23 13:28:33,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:28:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 89266 backedges. 51655 proven. 3265 refuted. 0 times theorem prover too weak. 34346 trivial. 0 not checked. [2022-07-23 13:28:54,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310201284] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:28:54,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:28:54,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 68, 68] total 93 [2022-07-23 13:28:54,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819426147] [2022-07-23 13:28:54,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:28:54,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-07-23 13:28:54,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:28:54,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-07-23 13:28:54,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=7816, Unknown=0, NotChecked=0, Total=8556 [2022-07-23 13:28:54,410 INFO L87 Difference]: Start difference. First operand 1903 states and 1985 transitions. Second operand has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-23 13:29:00,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:00,007 INFO L93 Difference]: Finished difference Result 3777 states and 3942 transitions. [2022-07-23 13:29:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-07-23 13:29:00,008 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 975 [2022-07-23 13:29:00,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:00,014 INFO L225 Difference]: With dead ends: 3777 [2022-07-23 13:29:00,015 INFO L226 Difference]: Without dead ends: 2618 [2022-07-23 13:29:00,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2257 GetRequests, 1960 SyntacticMatches, 1 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28143 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=10796, Invalid=77710, Unknown=0, NotChecked=0, Total=88506 [2022-07-23 13:29:00,031 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 167 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 6406 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 6432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 6406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:00,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 681 Invalid, 6432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 6406 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-23 13:29:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-07-23 13:29:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2312. [2022-07-23 13:29:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2239 states have (on average 1.0397498883430103) internal successors, (2328), 2239 states have internal predecessors, (2328), 3 states have call successors, (3), 2 states have call predecessors, (3), 69 states have return successors, (70), 70 states have call predecessors, (70), 2 states have call successors, (70) [2022-07-23 13:29:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 2401 transitions. [2022-07-23 13:29:00,443 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 2401 transitions. Word has length 975 [2022-07-23 13:29:00,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:00,443 INFO L495 AbstractCegarLoop]: Abstraction has 2312 states and 2401 transitions. [2022-07-23 13:29:00,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-23 13:29:00,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 2401 transitions. [2022-07-23 13:29:00,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2022-07-23 13:29:00,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:00,453 INFO L195 NwaCegarLoop]: trace histogram [241, 241, 241, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-07-23 13:29:00,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-23 13:29:00,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:00,668 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:00,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:00,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1275650230, now seen corresponding path program 17 times [2022-07-23 13:29:00,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:00,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390808746] [2022-07-23 13:29:00,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:00,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:01,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 13:29:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:01,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:02,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:03,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:03,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:03,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:03,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:03,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:03,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 95854 backedges. 42958 proven. 846 refuted. 0 times theorem prover too weak. 52050 trivial. 0 not checked. [2022-07-23 13:29:04,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:04,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390808746] [2022-07-23 13:29:04,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390808746] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:04,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867755422] [2022-07-23 13:29:04,149 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:29:04,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:04,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:04,150 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:29:04,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-23 13:29:05,442 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2022-07-23 13:29:05,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:29:05,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-23 13:29:05,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 95854 backedges. 58868 proven. 4643 refuted. 0 times theorem prover too weak. 32343 trivial. 0 not checked. [2022-07-23 13:29:06,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:29:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 95854 backedges. 59724 proven. 3787 refuted. 0 times theorem prover too weak. 32343 trivial. 0 not checked. [2022-07-23 13:29:23,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867755422] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:29:23,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:29:23,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 66, 66] total 95 [2022-07-23 13:29:23,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287851627] [2022-07-23 13:29:23,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:29:23,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-07-23 13:29:23,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:23,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-07-23 13:29:23,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=862, Invalid=8068, Unknown=0, NotChecked=0, Total=8930 [2022-07-23 13:29:23,127 INFO L87 Difference]: Start difference. First operand 2312 states and 2401 transitions. Second operand has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-23 13:29:29,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:29,775 INFO L93 Difference]: Finished difference Result 4111 states and 4269 transitions. [2022-07-23 13:29:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2022-07-23 13:29:29,776 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 1002 [2022-07-23 13:29:29,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:29,783 INFO L225 Difference]: With dead ends: 4111 [2022-07-23 13:29:29,783 INFO L226 Difference]: Without dead ends: 3122 [2022-07-23 13:29:29,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2324 GetRequests, 2014 SyntacticMatches, 3 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29115 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=12888, Invalid=82284, Unknown=0, NotChecked=0, Total=95172 [2022-07-23 13:29:29,791 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 206 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 6995 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 7028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 6995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:29,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 903 Invalid, 7028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 6995 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-23 13:29:29,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2022-07-23 13:29:30,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2752. [2022-07-23 13:29:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2752 states, 2669 states have (on average 1.0363431997002623) internal successors, (2766), 2669 states have internal predecessors, (2766), 3 states have call successors, (3), 2 states have call predecessors, (3), 79 states have return successors, (80), 80 states have call predecessors, (80), 2 states have call successors, (80) [2022-07-23 13:29:30,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 2849 transitions. [2022-07-23 13:29:30,153 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 2849 transitions. Word has length 1002 [2022-07-23 13:29:30,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:30,154 INFO L495 AbstractCegarLoop]: Abstraction has 2752 states and 2849 transitions. [2022-07-23 13:29:30,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-23 13:29:30,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 2849 transitions. [2022-07-23 13:29:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2022-07-23 13:29:30,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:30,165 INFO L195 NwaCegarLoop]: trace histogram [249, 249, 249, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-07-23 13:29:30,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-23 13:29:30,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:30,391 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:30,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:30,391 INFO L85 PathProgramCache]: Analyzing trace with hash 8901130, now seen corresponding path program 18 times [2022-07-23 13:29:30,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:30,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874380035] [2022-07-23 13:29:30,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:30,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:31,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 13:29:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:31,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:34,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:34,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:34,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:34,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:34,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 101914 backedges. 45682 proven. 975 refuted. 0 times theorem prover too weak. 55257 trivial. 0 not checked. [2022-07-23 13:29:34,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:34,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874380035] [2022-07-23 13:29:34,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874380035] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:34,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657140005] [2022-07-23 13:29:34,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-23 13:29:34,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:34,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:34,100 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:29:34,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-23 13:29:35,730 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2022-07-23 13:29:35,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:29:35,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-23 13:29:35,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 101914 backedges. 36147 proven. 3936 refuted. 0 times theorem prover too weak. 61831 trivial. 0 not checked. [2022-07-23 13:29:37,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:29:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 101914 backedges. 36147 proven. 3936 refuted. 0 times theorem prover too weak. 61831 trivial. 0 not checked. [2022-07-23 13:29:39,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657140005] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:29:39,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:29:39,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 37, 37] total 133 [2022-07-23 13:29:39,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760820606] [2022-07-23 13:29:39,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:29:39,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-07-23 13:29:39,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:39,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-07-23 13:29:39,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1875, Invalid=15681, Unknown=0, NotChecked=0, Total=17556 [2022-07-23 13:29:39,709 INFO L87 Difference]: Start difference. First operand 2752 states and 2849 transitions. Second operand has 133 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 128 states have internal predecessors, (238), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-23 13:29:51,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:51,300 INFO L93 Difference]: Finished difference Result 10301 states and 11361 transitions. [2022-07-23 13:29:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2022-07-23 13:29:51,301 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 128 states have internal predecessors, (238), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 1026 [2022-07-23 13:29:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:51,321 INFO L225 Difference]: With dead ends: 10301 [2022-07-23 13:29:51,321 INFO L226 Difference]: Without dead ends: 9080 [2022-07-23 13:29:51,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2470 GetRequests, 2031 SyntacticMatches, 0 SemanticMatches, 439 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61790 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=22403, Invalid=171637, Unknown=0, NotChecked=0, Total=194040 [2022-07-23 13:29:51,342 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 2630 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 3787 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2630 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 4368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 3787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:51,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2630 Valid, 1124 Invalid, 4368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 3787 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-23 13:29:51,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9080 states. [2022-07-23 13:29:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9080 to 3360. [2022-07-23 13:29:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3360 states, 3266 states have (on average 1.0404164115125536) internal successors, (3398), 3266 states have internal predecessors, (3398), 3 states have call successors, (3), 2 states have call predecessors, (3), 90 states have return successors, (91), 91 states have call predecessors, (91), 2 states have call successors, (91) [2022-07-23 13:29:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 3492 transitions. [2022-07-23 13:29:51,975 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 3492 transitions. Word has length 1026 [2022-07-23 13:29:51,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:51,976 INFO L495 AbstractCegarLoop]: Abstraction has 3360 states and 3492 transitions. [2022-07-23 13:29:51,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 128 states have internal predecessors, (238), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-23 13:29:51,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 3492 transitions. [2022-07-23 13:29:51,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1116 [2022-07-23 13:29:51,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:51,989 INFO L195 NwaCegarLoop]: trace histogram [282, 282, 282, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-07-23 13:29:52,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-23 13:29:52,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-23 13:29:52,203 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:52,204 INFO L85 PathProgramCache]: Analyzing trace with hash 323775503, now seen corresponding path program 19 times [2022-07-23 13:29:52,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:52,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393466970] [2022-07-23 13:29:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:52,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:29:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:53,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:54,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:54,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:55,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:55,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:55,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:29:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 128692 backedges. 69838 proven. 1113 refuted. 0 times theorem prover too weak. 57741 trivial. 0 not checked. [2022-07-23 13:29:56,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:56,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393466970] [2022-07-23 13:29:56,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393466970] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:56,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490329669] [2022-07-23 13:29:56,375 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-23 13:29:56,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:56,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:56,376 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:29:56,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-23 13:29:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:58,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 83 conjunts are in the unsatisfiable core [2022-07-23 13:29:58,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 128692 backedges. 86003 proven. 6106 refuted. 0 times theorem prover too weak. 36583 trivial. 0 not checked. [2022-07-23 13:29:59,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:30:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 128692 backedges. 86003 proven. 6106 refuted. 0 times theorem prover too weak. 36583 trivial. 0 not checked. [2022-07-23 13:30:28,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490329669] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:30:28,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:30:28,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 83, 83] total 114 [2022-07-23 13:30:28,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607007227] [2022-07-23 13:30:28,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:30:28,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-07-23 13:30:28,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:28,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-07-23 13:30:28,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1076, Invalid=11806, Unknown=0, NotChecked=0, Total=12882 [2022-07-23 13:30:28,979 INFO L87 Difference]: Start difference. First operand 3360 states and 3492 transitions. Second operand has 114 states, 114 states have (on average 2.1666666666666665) internal successors, (247), 97 states have internal predecessors, (247), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-23 13:30:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:41,253 INFO L93 Difference]: Finished difference Result 5650 states and 5874 transitions. [2022-07-23 13:30:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2022-07-23 13:30:41,254 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.1666666666666665) internal successors, (247), 97 states have internal predecessors, (247), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) Word has length 1115 [2022-07-23 13:30:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:41,262 INFO L225 Difference]: With dead ends: 5650 [2022-07-23 13:30:41,263 INFO L226 Difference]: Without dead ends: 4463 [2022-07-23 13:30:41,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2646 GetRequests, 2232 SyntacticMatches, 1 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56109 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=20831, Invalid=150979, Unknown=0, NotChecked=0, Total=171810 [2022-07-23 13:30:41,276 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 197 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 13996 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 14028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 13996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:41,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1213 Invalid, 14028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 13996 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-23 13:30:41,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2022-07-23 13:30:42,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 3947. [2022-07-23 13:30:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 3841 states have (on average 1.036709190315022) internal successors, (3982), 3841 states have internal predecessors, (3982), 3 states have call successors, (3), 2 states have call predecessors, (3), 102 states have return successors, (103), 103 states have call predecessors, (103), 2 states have call successors, (103) [2022-07-23 13:30:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 4088 transitions. [2022-07-23 13:30:42,078 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 4088 transitions. Word has length 1115 [2022-07-23 13:30:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:42,079 INFO L495 AbstractCegarLoop]: Abstraction has 3947 states and 4088 transitions. [2022-07-23 13:30:42,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.1666666666666665) internal successors, (247), 97 states have internal predecessors, (247), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-23 13:30:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 4088 transitions. [2022-07-23 13:30:42,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2022-07-23 13:30:42,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:42,095 INFO L195 NwaCegarLoop]: trace histogram [287, 287, 287, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:42,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-07-23 13:30:42,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-23 13:30:42,312 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:42,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:42,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1864592074, now seen corresponding path program 20 times [2022-07-23 13:30:42,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:42,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375512830] [2022-07-23 13:30:42,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:42,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:43,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 13:30:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:44,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 133321 backedges. 72514 proven. 1266 refuted. 0 times theorem prover too weak. 59541 trivial. 0 not checked. [2022-07-23 13:30:47,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:47,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375512830] [2022-07-23 13:30:47,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375512830] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:30:47,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022658066] [2022-07-23 13:30:47,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:30:47,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:47,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:30:47,007 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:30:47,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-23 13:30:49,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:30:49,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:30:49,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 88 conjunts are in the unsatisfiable core [2022-07-23 13:30:49,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:30:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 133321 backedges. 94098 proven. 7329 refuted. 0 times theorem prover too weak. 31894 trivial. 0 not checked. [2022-07-23 13:30:51,426 INFO L328 TraceCheckSpWp]: Computing backward predicates...